Compared to just a year ago, 39% of respondents are spending more time in their cars (37% reported they are spending the same amount of time). Overall, the study found that people are averaging 15 hours per week in week in the car. One surprising outcome was that time spent in cars during the weekday (two hours and twelve minutes) is on par with weekend days (a little over two hours). With all of this extra time in their vehicles, Americans are covering a lot of ground an average of about 306 miles per week per consumer.